Photo-electrooxidation treatment of Acetaminophen in aqueous solution using BDD-Fe and BDD-Cu systems
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2020-09-11 |
| Journal | Environmental Technology |
| Authors | Ana Gabriela Sierra-Sánchez, Ivonne Linares‐Hernández, Verónica Martínez-Miranda, Perla Tatiana Almazán-Sánchez, Elía Alejandra Teutli-Sequeira |
| Institutions | Instituto Nacional de Investigaciones Nucleares, Universidad Autónoma del Estado de México |
| Citations | 11 |
Abstract
Section titled “Abstract”In this study, acetaminophen (ACT) in aqueous solution was treated with electrooxidation and photo-electrooxidation processes (PEO). An electrochemical cell was used for the treatment of different concentrations of ACT (10, 50 and 80 mg L<sup>-1</sup>). A 2<sup>3</sup> factorial design was proposed, and the variables studied were current intensity 0.5 A (45.45 mA cm<sup>-2</sup>) and 1.0 A (90.91 mA cm<sup>-2</sup>), electrode configuration (anode:BDD, cathode:Fe or Cu) and presence/absence of UV light; NaCl 0.043 M (2.5 g L<sup>-1</sup>) was used as supporting electrolyte, the initial pH was 5.5, and the treatment time was 3 h. The aqueous solutions were characterized before and after the treatment using infrared spectroscopy (FT-IR), Ultraviolet-visible spectroscopy (UV-Vis), chemical oxygen demand (COD), total organic carbon (TOC), total carbon (TC), and fluorescence spectroscopy. The optimal operating conditions using an initial ACT concentration of 80 mg L<sup>-1</sup> were 1.0 A, BDD-Fe configuration and UV light (254 nm). The removal efficiencies were 100% of ACT and 82.75% of TOC after 15 min of treatment. At concentrations of 50 and 10 mg L<sup>-1</sup>, 77.16% and 50.29% of TOC were removed after 10 and 5 min of treatment, respectively. Finally, the kinetic study showed an increase in the rate constants when the UV light was applied.